Barb-wire.



PATENTED NOV. 21, 1905.

I. G. CARBON.a BARB WIRE.

' APPLICATION FILED mm: 2, 1905.

I 2/2/021Z0/0 a/pmw w. M

UNITED STATES OFFICE.

BARB-WIRE.

Specification of Letters Patent.

PatentedNov. 21 1905.

Application filed June 2, 1905. Serial No, 263,387.

To all whmn it may concern.-

Be it known that I, FRANCIS O. CARROLL, a citizen of the United States, residing at Peoria, in the county of Peoria and State of Illinois, have invented certain new and useful Improvements in Barb-VVires; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

This invention has reference to improvements in barb-wire, and has special reference to a yielding barb as applied to barb-wire strands.

The invention is designed as an improvement of the barb-wire fence patented by me December 5, 1899, No. 638,320, wherein the essential feature of the invention is the looping of the barb-wire loosely around its carrying-wire to make it rotatable thereon and adapting it to move by external contact, the said barb-wire consisting of separate strands of a cable provided with open spaces by expanding or holding the said strands apart and forming a barb which is twisted into a loop somewhat larger than and loosely surrounding one of said strands, which permits the barb to turn freely on the wire as an axis.

. The object which I have in view in the present invention is to provide a structure having all of the good features of my former patent and wherein the barbs thereof do not make a complete rotation on their carrying-wire, but have approximately a onehalf turn, the strand on which the barbs are carried forming one strand of a wire cable and the opposite strand being intertwisted with the first-mentioned strand to form a cable and at points intersecting the barb-wire on the first-mentioned strand. The second strand-wire is provided with crimped, corrugated, or U shaped portions adapting the barbs to have a partial rotation on their carrying-strand, but serving to limit the rotation of the barbs by contact of the arms or prongs of the barbs with the corrugations aforesaid.

That the invention may be more fully understood reference is had to the accompanying drawings, in which Figure 1 shows an elevation of a section of fence embodying my invention. Fig. 2 shows a sectional view of the same, taken where the barb and corrugations or U-shaped portions coincide.

In the figures a cable strand or stringer is illustrated composed of the wires 1 and 2, which are intertwisted in the manner seen.

At suitable points or intervals the wire 1 is, provided with corrugations, bowed or U portions 3, with their arcuate portions extending diagonally across the wire 2 and merging into the intertwists of the wires 1 and 2 intermediate the said bowed portions. The wire 2 at points 4 coincident with the bowed portions 3 of the wire 1 are plain or lie substantially in a horizontal line and are adapted to carry at this point barbs formed of the coiled or looped portions 5, somewhat larger and loosely surrounding the wire 2, which will permit the barb to have a partial rotating movement on the wire 2 as an axis.

6 is a long or heavy arm or prong of the barb, serving as a weight, and 7 is a shorter arm, which formation of the barb adapts it to act automatically to revert back to its normal positions when disturbed from any cause.

With the construction of the Wires 1 and 2 where the bowed portions 3 of the wires 1 occur the barbs, While they may have a partial rotation on their carrying-wire, will not make a complete revolution, as in my former patent above referred'to. It has been found in the practical manufacture of the fence that only one of the wires need be bowed to permit the desired movement of the barbs on the carrying-wire, and this is done by feeding the wire 1 and placing thereon the barbs at desired intervals, then intertwisting with the wire 1 the wire 2 to form the cablestrand, as shown, the wire 2 being first corrugated or provided with the bowed portions 3 to coincide with the barbs of the wire 1 as the wires 1 and 2 are intertwisted.

The wire as now manufactured can be produced at less cost and more conveniently than formerly. Further, the objections to the rigid barb are entirely overcome in this yielding barb, the barbs being so set on the wire as to allow freedom of motion, which is very advantageous over a rigid barb.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent of the United States, is

1. As a new article of manufacture, abarbwire consisting of two intertwisted strands, one of said strands provided at intervals with bowed or substantially U-shaped portions, the arcuate portions thereof extending diagonally to the general or longitudinal plane of the strands and merging into the intertwists thereof, the opposite strand having substantially horizontal portions at points coincident with said bowed or U-shaped portions, and barbs loosely coiled about said substantially horizontal portions of the one strand to revolve thereon, said barbs having prongs of different length, each of said prongs being of a length greater than the space between the bowed portions of one strand and the horizontal portions of the opposite strand whereby to prevent a complete rotation of the barbs on their strand.

2. As a new article of manufacture, a barb- Wire embodying two intertwisted strands, one of said strands provided at intervals with bowed or substantially U-shaped portions, the arouate portions thereof extending diagonally to the general or longitudinal plane of the strand and merging into the intertwists thereof, the other of said strands having substanportions of the respective strands, to prevent complete rotation of said barbs on their strand. In testimony whereof I afiix my signature in presence of two Witnesses.

FRANCIS C. CARROLL.

Witnesses:

I CHAS. W. LA PORTE,

ROBERT N. MoCoRMIoK. 

